prob

 void calc_probability(int num)

 {

     int i = , j =  , k = ;

     #define  SIZE_NUM 8

     int *array_num = NULL;

     int *remember_num = NULL;

     char (**array_detail)[SIZE_NUM] = NULL; //数组指针

     int len_array = ;

     int count_num = ;

     int count = ;

     len_array =  * num - ;

     array_num = (int*)calloc(len_array, sizeof(int));

     array_detail = (char (**)[SIZE_NUM])calloc(len_array, sizeof(char(*))); //这里注意是sizeof(char(*)不是sizeof(char(*)[SIZE_NUM])

     remember_num = (int*)calloc(len_array, sizeof(int));

     for(i = ; i < len_array; i++)

     {

         array_num[i] = i + ;

         array_detail[i] = (char(*)[SIZE_NUM])calloc(count_num + , sizeof(char[SIZE_NUM]));

     }

     for(i = ; i < len_array; i++)

     {

         count = ; // 计数清零

         count_num = ;

         for(j = ; j <= num; j++)

         {

             for(k = ; k <= num; k++)

             {

                 if(j + k == array_num[i])

                 {

                     sprintf(array_detail[i] + count_num, "(%d, %d)", j, k);

                     //printf("%s", array_detail[i] + count_num);

                     count_num++;

                     count++;

                     array_detail[i]  = (char(*)[SIZE_NUM])realloc(array_detail[i], (count_num + ) * sizeof(char[SIZE_NUM]));

                     memset(array_detail[i] + count_num, 0x0, SIZE_NUM);

                 }

             }

         }

         remember_num[i] = count;

     }

     for(i = ; i < len_array; i ++)

     {

         printf("数字 %d 的个数是: %d\n", i + , remember_num[i]);

         for(j = ; j < remember_num[i]; j++)

         {

             printf("%s ", array_detail[i] + j);

         }

         printf("\n");

     }

     //释放内存

     free(remember_num);

     remember_num = NULL;

     free(array_num);

     array_num = NULL;

     for(i = ; i < len_array; i++)

     {

         free(array_detail[i]);

         array_detail[i] = NULL;

     }

     free(array_detail);

     array_detail = NULL;

     return;

 }

错了好多次，终于改对了。